They said they confirmed his detention with authorities. Jordanian security officials declined comment. Al-Maqdisi shared a cellblock between 1995 and 1999 with Al-Zarqawi, who led Al-Qaeda in Iraq before he died in a US airstrike in 2006.

Meanwhile, a court on Sunday charged two Jordanian brothers with plotting to attack US and British officers in the country earlier this year. The court also charged Alaeddin Abu Sarhan and his brother Mohammad, with the illegal possession of weapons.